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/*
This file is part of keks-meet (https://codeberg.org/metamuffin/keks-meet)
which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
Copyright (C) 2022 metamuffin <metamuffin@disroot.org>
*/
/// <reference lib="dom" />
import { ProvideInfo } from "../../../common/packets.d.ts"
import { ediv } from "../helper.ts";
import { TrackHandle } from "../track_handle.ts";
import { LocalUser } from "../user/local.ts";
import { User } from "../user/mod.ts"
import { RemoteUser } from "../user/remote.ts"
import { TrackResource } from "./track.ts";
export type ChannelState = "enabled" | "await_enable" | "disabled" | "await_disable"
export abstract class Resource extends EventTarget {
local: boolean
el: HTMLElement = ediv({ class: ["channel"] })
inner_el?: HTMLElement
constructor(
public user: User,
public info: ProvideInfo,
) {
super()
this.local = this.user instanceof LocalUser
const button = document.createElement("button")
button.onclick = () => {
this.state == "enabled" ? this.request_stop() : this.request()
}
this.addEventListener("statechange", () => {
if (this.user instanceof LocalUser) button.textContent = "End", button.disabled = false
else if (this.state == "enabled") button.textContent = "Disable", button.disabled = false
else if (this.state == "disabled") button.textContent = `Enable ${this.info.kind}`, button.disabled = false
else button.textContent = "Working…", button.disabled = true;
})
this.dispatchEvent(new CustomEvent("statechange"))
this.el.append(button)
}
static create(user: User, info: ProvideInfo): Resource {
if (info.kind == "audio" || info.kind == "video") return new TrackResource(user, info)
else throw new Error("blub");
}
private _state: ChannelState = "disabled"
get state() { return this._state }
set state(value: ChannelState) {
const old_value = this._state
this._state = value
if (value != old_value) this.dispatchEvent(new CustomEvent("statechange"))
}
private _track?: TrackHandle
get track() { return this._track }
set track(value: TrackHandle | undefined) {
const handle_end = () => {
this.track = undefined
this.state = "disabled"
this.inner_el?.remove()
if (this.user instanceof LocalUser) this.destroy()
}
this._track?.removeEventListener("ended", handle_end)
this._track = value
if (value) this.el.append(this.inner_el = this.on_track(value))
if (value) this.state = "enabled"
else this.state = "disabled"
this._track?.addEventListener("ended", handle_end)
}
abstract on_track(_track: TrackHandle): HTMLElement
destroy() { this.dispatchEvent(new CustomEvent("destroy")) }
request() {
if (!(this.user instanceof RemoteUser)) return
this.state = "await_enable"
this.user.send_to({ request: { id: this.info.id } })
}
request_stop() {
if (this.user instanceof RemoteUser) {
this.state = "await_disable"
this.user.send_to({ request_stop: { id: this.info.id } })
} else if (this.user instanceof LocalUser) {
this.destroy()
}
}
}
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